Set off the Oscar sirens, because the race for Best Actress has formally begun. Revolving around Jacqueline Kennedy’s final days in the White House following the assassination of her husband, John F. Kennedy, the latest trailer for the Pablo LarraÃn–directed Jackie provides an intimate look at the psychological composure and poise the First Lady (Natalie Portman) attempted to maintain throughout the whole devastating ordeal. Also starring Greta Gerwig and Peter Sarsgaard, the film will be released on December 2.